package com.abrindoportas.bsbtour.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.hibernate.SessionFactory;

public class ConexaoHibernateFilter implements Filter {

	private SessionFactory sf;

	public void init(FilterConfig conf) throws ServletException {
		this.sf = HibernateUtil.getSession();
	}

	public void doFilter(ServletRequest servletFilter, ServletResponse servletResponse, 
			FilterChain chain) throws IOException, ServletException {
		
		try {
			
			this.sf.getCurrentSession().beginTransaction();
			chain.doFilter(servletFilter, servletResponse);
			this.sf.getCurrentSession().getTransaction().commit();
			this.sf.getCurrentSession().close();
			
		} catch (Throwable ex) {
			
			try {
				
				if (this.sf.getCurrentSession().getTransaction().isActive()) {
					this.sf.getCurrentSession().getTransaction().rollback();
				}
				
			} catch (Throwable t) {
				t.printStackTrace();
			}
			
			throw new ServletException(ex);
		}

	}
	
	public void destroy() {

	}

}